Concentrating-table.



No. 719,402. PATENTED JAN. 27, 1903. A; R. WILFLEY'. GONGENTRATINGTABLE.

APPLICATION FILED JAN. 71 1902.

30101121 2 BEBETB+SEEBT 1.

THE mums PETERS 09.. PHOTO-LUNG" msmnnmn. a c,

No. 719,402. I PATENTEDJAN. 27; 1903. A. R. WILFLEY. GONGENTRATINGTABLE.

APPLICATION I'ILBD JAN. 7, 1902.

10 MODEL. 2 sums-41mm 2.

FFTCQ ARTHUR R. WILFLEY, OF DENVER, COLORADO.

CONCENTRATlNG-TABLE.

SPECIFICATION forming part of Letters Patent No. 719,402, dated January27, 1903.

Application filed January '7, 1902. Serial No. 88.781. (N0 model.)

To aZZ whom it may concern:

Be it known that 1, ARTHUR R. WILFLEY, a citizen of the United States,and a resident of Denver, in the county of Arapahoe and State ofColorado, have invented a new and useful Improvement inConcentrating-Tables, of which the following is a specification.

My invention relates to an improvement in concentrating-tables; and itcomprehends more particularly certain developments of the machine whichI have previously patented and upon which applications are now pendingin the Patent Office.

The present invention consists in an improved rocker upon which thetable or deck is mounted, the function of this rocker being to greatlyfacilitate the reciprocating movement of the table or deck in theprocess of ore concentration and in the accomplishment of this purposethe elimination of friction, so far as possible, or its reduction to aminimum, while at the same time deriving superior results thanheretofore and with simplified mechanical instrumentality.

My present invention also consists in certain other mechanical detailsfor carrying out these objects, and these will be hereinafter fullydescribed.

In the accompanying drawings, Figure 1 is a plan view showing theserockers in position beneath the table or deck, their location beingindicated by dotted lines. Fig. 2 is a view in side elevation, and Figs.3 and 4 are enlarged details.

A represents the main frame of the concentrator, it comprisinglongitudinal sills 1 1 and cross-ties 2 2, securely bolted thereto. Onthis frame intermediate frame B is supported, and above frame B theconcentrator table or deck 0 is located. Frame Bis stationary, althoughit is capable of being tilted transversely to give the required angle ofinclination to the table or deck supported upon it. The table or deck 0,on the other hand, has a reciprocating motion imparted to it by themechanism disclosed in my former patents and applications or by anyapproved means.

Interposed between intermediate frame 13 and the table or deck 0 are aset of rockers 3 3 3, preferably three in number. These rockers extendtransversely of the concentrator and nearly across the Width of thetable. These rockers are preferably made of Wood in dimensions, say,about an inch thick by four and one-half inches in width, giving aradius of two and a fourth inches from the center, and in operation theeifect of a roller, although it is, in fact, only a section through aroller, as each rocker rests or bears upon its lower edge, upon which itturns or rolls. The opposite edges of each rocker are rounded in the arcof a circle struck from the center of the rocker, and these edges arefaced with sheet-steel, as at L 4, about an eighth of an inch inthickness, to give the required rigidity and withstand the wear andpunishment to which such a part is subjected. Each rocker is locatedimmediately beneath a cross-bar 5, secured to the under surface of thetable or deck, and thesecross-bars rest upon the rockers. The rockersare supported by a set of U shaped hangers 0r equivalent means 6 6,there being preferably about three of these hangers for each rocker.These hangers are securely bolted at their upper ends to cross-ties 2 2,between which they are located. The shape of these hangers is such thatthey form stops at each side of the rockers, and while the rockers maynot strike the hangers with each throw of the table, yet they are inposition to prevent their play back and forth beyond predeterminedpoints.

This provision is the more important because of the fact that therockers are held loosely in the hangers and not secured therein. Therockers do not rest directly upon the hangers at their lower edges, butroll upon a die or bar 7, which rests in the bottom of the hangers. Thedie or bar is of such width relative to the constricted lower ends ofthe hangers that suiiicient clearance is afforded on either side for anydirt to drop through, so that nothing can accumulate under the rocker toimpede its free and even rolling or rocking motion.

From the foregoing it will be seen that the rockers rest loosely andmovably upon their bearings in the hangers and the table or deck in likemanner is supported upon and by the rockers solely, and when thereciprocating motion necessary to the process of concentration isimparted to the table or deck the latter moves with perfect freedom uponthe rockers, forcing them laterally back and forth with its endwisemovement within the confines of the U-shaped hangers which support saidrockers and afford a limitation to their rocking motion. In this wayfriction between the parts is eliminated, as the rockers are in thenature of roller-bearings, with the advantage that the rockers are muchlighter and take less space than rollers of equivalent diameter, and asa result of their being lighter they will not slip at the end of eachstroke of the table or deck. Also an advantage results in the provisionof the U shaped hangers, which confine the rockers within restrictedbounds.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is i 1. The combination with a frame, and amovable table or deck, of rectangular rockers, extending transversely aconsiderable distance on each side of the central line of and interposededgewise between the frame and table or deck and disconnected from each,and means aside from that which moves the table or deck for limiting themovements of the rockers.

2. The combination with a frame, and a movable table or deck, ofrectangular rockers extending transversely a considerable distance oneach side of the central line of and interposed edgewise between theframe and table or deck and disconnected from each, said rockersextending partly below the surface of the frame whereby means isprovided for limiting their rocking movement separate and distinct fromthe force which moves the table.

3. The combination with a suitable base, and'a concentrator deck ortable, of rectangnlar rockers interposed between said parts for thesupport of the table during its reciprocations, U-shaped hangers for thesupport of said rockers, and dies supported in the bottoms of saidhangers, and upon which the rockers roll, thetwidth of these dies orbars being sufficiently less than that of the hangers to affordclearance for dirt to drop through and prevent its accumulation beneaththe rockers.

4. The combination with longitudinal sills, cross-ties secured theretoand hangers located between cross ties and securing them together inpairs, of rockers supported in and capable of rocking in the hangers,the relative location of the rockers and sills being such that thelatter prevent end movement of the rockers.

In testimony whereof I have signed this specification in the presence oftwo subscribing Witnesses.

ARTHUR R. WILFLEY.

Witnesses:

E. BLANCHE BADGER, A. G. WILLIAMS.

